diff --git a/zebra/ioctl.h b/zebra/ioctl.h
new file mode 100644
index 0000000..157fc44
--- /dev/null
+++ b/zebra/ioctl.h
@@ -0,0 +1,46 @@
+/*
+ * Common ioctl functions.
+ * Copyright (C) 1998 Kunihiro Ishiguro
+ *
+ * This file is part of GNU Zebra.
+ *
+ * GNU Zebra is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2, or (at your option) any
+ * later version.
+ *
+ * GNU Zebra is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Zebra; see the file COPYING.  If not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.  
+ */
+
+#ifndef _ZEBRA_IOCTL_H
+#define _ZEBRA_IOCTL_H
+
+/* Prototypes. */
+void ifreq_set_name (struct ifreq *, struct interface *);
+int if_ioctl (u_long, caddr_t);
+
+int if_set_flags (struct interface *, unsigned long);
+int if_unset_flags (struct interface *, unsigned long);
+void if_get_flags (struct interface *);
+
+int if_set_prefix (struct interface *, struct connected *);
+int if_unset_prefix (struct interface *, struct connected *);
+
+void if_get_metric (struct interface *);
+void if_get_mtu (struct interface *);
+
+#ifdef HAVE_IPV6
+int if_prefix_add_ipv6 (struct interface *, struct connected *);
+int if_prefix_delete_ipv6 (struct interface *, struct connected *);
+
+#endif /* HAVE_IPV6 */
+
+#endif /* _ZEBRA_IOCTL_H */